SOFA Contractors Getting Bank Accounts, Rental etc.

So the most recent threads were about 10 years out of date so I decided it’s appropriate to post here again for a modern question.

How exactly am I supposed to get a place to rent , then the bank account (if it requires an address) , and a phone (I heard LIME is ok )

But the problem is LIME and other phone companies require a visa to register .

SOFA status isn’t a visa so how do I get a phone plan?

Because of the nature of our contract we need to live within central Tokyo and no I cannot disclose anything else .

How do we explain this to landlords exactly?

I also have to register a Japanese branch office of our US company but technically I can’t be on a business manager visa and a SOFA.

I’m unsure how to do this and my contacts aren’t very helpful . They basically are about to award us the contract and we have to “figure it out”